I have a GE XL44 Self-Cleaning Gas Range.
Model# JGBP30EA3WWW

The control knob for the oven does not work well.
When I set a temperature, often the display will fluctuate among a few temperatures until I nudge the knob again.

Worse, the oven sometimes turns on by itself.
It seems to be triggered by vibrations.
If someone jumps or hops on the floor nearby (or perhaps even walks by) - or opening and closing the oven door.
Any of these things might cause the oven to turn on.

What part needs to be replaced to repair this?

Thanks,

Mike